xref: /titanic_51/usr/src/cmd/devfsadm/smp_link.c (revision 936b7af69172dce89b577831f79c0e18d15e854b)
1*936b7af6Sjw149990 /*
2*936b7af6Sjw149990  * CDDL HEADER START
3*936b7af6Sjw149990  *
4*936b7af6Sjw149990  * The contents of this file are subject to the terms of the
5*936b7af6Sjw149990  * Common Development and Distribution License (the "License").
6*936b7af6Sjw149990  * You may not use this file except in compliance with the License.
7*936b7af6Sjw149990  *
8*936b7af6Sjw149990  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*936b7af6Sjw149990  * or http://www.opensolaris.org/os/licensing.
10*936b7af6Sjw149990  * See the License for the specific language governing permissions
11*936b7af6Sjw149990  * and limitations under the License.
12*936b7af6Sjw149990  *
13*936b7af6Sjw149990  * When distributing Covered Code, include this CDDL HEADER in each
14*936b7af6Sjw149990  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*936b7af6Sjw149990  * If applicable, add the following below this CDDL HEADER, with the
16*936b7af6Sjw149990  * fields enclosed by brackets "[]" replaced with your own identifying
17*936b7af6Sjw149990  * information: Portions Copyright [yyyy] [name of copyright owner]
18*936b7af6Sjw149990  *
19*936b7af6Sjw149990  * CDDL HEADER END
20*936b7af6Sjw149990  */
21*936b7af6Sjw149990 
22*936b7af6Sjw149990 /*
23*936b7af6Sjw149990  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
24*936b7af6Sjw149990  * Use is subject to license terms.
25*936b7af6Sjw149990  */
26*936b7af6Sjw149990 
27*936b7af6Sjw149990 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28*936b7af6Sjw149990 
29*936b7af6Sjw149990 #include <devfsadm.h>
30*936b7af6Sjw149990 #include <strings.h>
31*936b7af6Sjw149990 #include <stdlib.h>
32*936b7af6Sjw149990 #include <limits.h>
33*936b7af6Sjw149990 #include <bsm/devalloc.h>
34*936b7af6Sjw149990 
35*936b7af6Sjw149990 #define	SMP_LINK_RE	"^smp/expd[0-9]+$"
36*936b7af6Sjw149990 #define	SMP_CLASS	"sas"
37*936b7af6Sjw149990 #define	SMP_DRV_NAME	"smp"
38*936b7af6Sjw149990 
39*936b7af6Sjw149990 static int smp_callback(di_minor_t minor, di_node_t node);
40*936b7af6Sjw149990 
41*936b7af6Sjw149990 static devfsadm_create_t smp_create_cbt[] = {
42*936b7af6Sjw149990 	{ SMP_CLASS, "ddi_sas_smp", SMP_DRV_NAME,
43*936b7af6Sjw149990 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, smp_callback
44*936b7af6Sjw149990 	}
45*936b7af6Sjw149990 };
46*936b7af6Sjw149990 
47*936b7af6Sjw149990 DEVFSADM_CREATE_INIT_V0(smp_create_cbt);
48*936b7af6Sjw149990 
49*936b7af6Sjw149990 /*
50*936b7af6Sjw149990  * HOT auto cleanup of smp links not desired.
51*936b7af6Sjw149990  */
52*936b7af6Sjw149990 static devfsadm_remove_t smp_remove_cbt[] = {
53*936b7af6Sjw149990 	{ SMP_CLASS, SMP_LINK_RE, RM_PRE,
54*936b7af6Sjw149990 		ILEVEL_0, devfsadm_rm_all
55*936b7af6Sjw149990 	}
56*936b7af6Sjw149990 };
57*936b7af6Sjw149990 
58*936b7af6Sjw149990 DEVFSADM_REMOVE_INIT_V0(smp_remove_cbt);
59*936b7af6Sjw149990 
60*936b7af6Sjw149990 /*
61*936b7af6Sjw149990  * Create link for expander devices as form
62*936b7af6Sjw149990  * dev/smp/expd0 -> ../../devices/pci@0,0/.../smp@w5001636000005aff:smp
63*936b7af6Sjw149990  */
64*936b7af6Sjw149990 static int
65*936b7af6Sjw149990 smp_callback(di_minor_t minor, di_node_t node)
66*936b7af6Sjw149990 {
67*936b7af6Sjw149990 	char l_path[PATH_MAX + 1];
68*936b7af6Sjw149990 	char *buf;
69*936b7af6Sjw149990 	char *mn;
70*936b7af6Sjw149990 	char *devfspath;
71*936b7af6Sjw149990 	devfsadm_enumerate_t rules[1] = {"smp/expd([0-9]+)", 1, MATCH_ADDR};
72*936b7af6Sjw149990 
73*936b7af6Sjw149990 	mn = di_minor_name(minor);
74*936b7af6Sjw149990 
75*936b7af6Sjw149990 	devfspath = di_devfs_path(node);
76*936b7af6Sjw149990 
77*936b7af6Sjw149990 	(void) strcpy(l_path, devfspath);
78*936b7af6Sjw149990 	(void) strcat(l_path, ":");
79*936b7af6Sjw149990 	(void) strcat(l_path, mn);
80*936b7af6Sjw149990 
81*936b7af6Sjw149990 	di_devfs_path_free(devfspath);
82*936b7af6Sjw149990 
83*936b7af6Sjw149990 	if (devfsadm_enumerate_int(l_path, 0, &buf, rules, 1)) {
84*936b7af6Sjw149990 		return (DEVFSADM_CONTINUE);
85*936b7af6Sjw149990 	}
86*936b7af6Sjw149990 
87*936b7af6Sjw149990 	(void) strcpy(l_path, "smp/expd");
88*936b7af6Sjw149990 	(void) strcat(l_path, buf);
89*936b7af6Sjw149990 	free(buf);
90*936b7af6Sjw149990 
91*936b7af6Sjw149990 	(void) devfsadm_mklink(l_path, node, minor, 0);
92*936b7af6Sjw149990 
93*936b7af6Sjw149990 	return (DEVFSADM_CONTINUE);
94*936b7af6Sjw149990 }
95